hassan rouhani emerged as the surprise favorite in the presidential race after his campaign caught fire, especially among the young. he's a cleric who studied law in britain and has decades of diplomatic and political experience. in his inaugural speech, rouhani said his government would improve relations between iran, the region, and the world by building trust through transparency. to international diplomats listening, that was a welcome change of tone, signaling future cooperation. but to the many hard-line members of iran's regime, it sounded like a threat. political analyst professor saddiq zabakalam says he will have to fight them first. >> reporter: he does, however, have the backing of millions of voters who want them to fix than's economy-- battered and sinking under the pressure of international sanctions. to get those international sanctions lifted, president rouhani is going to have to come om with some kind of a deal in nuclear negotiations with the west due to resume this fall. elizabeth palmer, cbs news, tehran. >> dubois: 19 men died fighting a wildfire in arizona. now s